/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.dxf2.metadata.sync;

import com.fasterxml.jackson.databind.JsonNode;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.hisp.dhis.dxf2.metadata.systemsettings.DefaultMetadataSystemSettingService;
import org.hisp.dhis.render.RenderFormat;
import org.hisp.dhis.render.RenderService;
import org.hisp.dhis.system.SystemService;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

/**
 * Handling remote calls for metadata sync
 *
 * @author aamerm
 */
@Slf4j
@AllArgsConstructor
@Component("org.hisp.dhis.dxf2.metadata.sync.MetadataSyncDelegate")
@Scope("prototype")
public class MetadataSyncDelegate {
  private final DefaultMetadataSystemSettingService metadataSystemSettingService;

  private final RenderService renderService;

  private final SystemService systemService;

  public boolean shouldStopSync(String metadataVersionSnapshot) {
    String systemVersion = systemService.getSystemInfoVersion();
    if (StringUtils.isEmpty(systemVersion)
        || !metadataSystemSettingService.getStopMetadataSyncSetting()) {
      return false;
    }

    ByteArrayInputStream byteArrayInputStream =
        new ByteArrayInputStream(metadataVersionSnapshot.getBytes(StandardCharsets.UTF_8));
    String remoteVersion = "";

    try {
      JsonNode systemObject =
          renderService.getSystemObject(byteArrayInputStream, RenderFormat.JSON);

      if (systemObject == null) {
        return false;
      }

      remoteVersion = systemObject.get("version").textValue();

      if (StringUtils.isEmpty(remoteVersion)) {
        return false;
      }
    } catch (IOException e) {
      log.error("Exception occurred when parsing the metadata snapshot" + e.getMessage());
    }

    return !systemVersion.trim().equals(remoteVersion.trim());
  }
}
